blob: e6c5c44d39d593b4785dfe4a316c57c094b3b460 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/* rtems/posix/mutex.h
*
* This include file contains all the private support information for
* POSIX mutex's.
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#ifndef __RTEMS_POSIX_MUTEX_h
#define __RTEMS_POSIX_MUTEX_h
#ifdef __cplusplus
extern "C" {
#endif
#include <rtems/score/coremutex.h>
#include <pthread.h>
/*
* Data Structure used to manage a POSIX mutex
*/
typedef struct {
Objects_Control Object;
int process_shared;
CORE_mutex_Control Mutex;
} POSIX_Mutex_Control;
/*
* The following defines the information control block used to manage
* this class of objects.
*/
POSIX_EXTERN Objects_Information _POSIX_Mutex_Information;
/*
* _POSIX_Mutex_Manager_initialization
*
* DESCRIPTION:
*
* This routine performs the initialization necessary for this manager.
*/
void _POSIX_Mutex_Manager_initialization(
unsigned32 maximum_mutexes
);
/*
* _POSIX_Mutex_Allocate
*
* DESCRIPTION:
*
* This function allocates a mutexes control block from
* the inactive chain of free mutexes control blocks.
*/
RTEMS_INLINE_ROUTINE POSIX_Mutex_Control *_POSIX_Mutex_Allocate( void );
/*
* _POSIX_Mutex_Free
*
* DESCRIPTION:
*
* This routine frees a mutexes control block to the
* inactive chain of free mutexes control blocks.
*/
RTEMS_INLINE_ROUTINE void _POSIX_Mutex_Free (
POSIX_Mutex_Control *the_mutex
);
/*
* _POSIX_Mutex_Get
*
* DESCRIPTION:
*
* This function maps mutexes IDs to mutexes control blocks.
* If ID corresponds to a local mutexes, then it returns
* the_mutex control pointer which maps to ID and location
* is set to OBJECTS_LOCAL. if the mutexes ID is global and
* resides on a remote node, then location is set to OBJECTS_REMOTE,
* and the_mutex is undefined. Otherwise, location is set
* to OBJECTS_ERROR and the_mutex is undefined.
*/
RTEMS_INLINE_ROUTINE POSIX_Mutex_Control *_POSIX_Mutex_Get (
Objects_Id *id,
Objects_Locations *location
);
/*
* _POSIX_Mutex_Is_null
*
* DESCRIPTION:
*
* This function returns TRUE if the_mutex is NULL and FALSE otherwise.
*/
RTEMS_INLINE_ROUTINE boolean _POSIX_Mutex_Is_null (
POSIX_Mutex_Control *the_mutex
);
#include <rtems/posix/mutex.inl>
#include <rtems/posix/mutexmp.h>
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
|